default to strong references for method return types reset

default to strong references for method return types reset

2007-03-16  Jürg Billeter  <j@bitron.ch>

	* vala/parser.y: default to strong references for method return types
	* vala/valasymbolresolver.vala: reset TypeReference.transfers_ownership
	  for value-types
	* vala/valasourcefile.vala: assume ownership of include filenames
	* vala/valainterfacewriter.vala: use weak keyword for return types
	* vala/valacodecontext.vala, vala/valasourcefile.vala,
	  vala/valasymbolbuilder.vala, vapi/glib-2.0.vala: add weak to return
	  types

svn path=/trunk/; revision=235